If hostname A CNAMEs to hostname B, and different NSes return different CNAME targets, the per-NS record storage correctly captures this. But the IP resolution for port checks needs to follow ALL CNAME chains across ALL NSes to build the complete IP set. The spec does not clarify this.
From #5 item 9:
If hostname A CNAMEs to hostname B, and different NSes return different CNAME targets, the per-NS record storage correctly captures this. But the IP resolution for port checks needs to follow ALL CNAME chains across ALL NSes to build the complete IP set. The spec does not clarify this.
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From #5 item 9:
If hostname A CNAMEs to hostname B, and different NSes return different CNAME targets, the per-NS record storage correctly captures this. But the IP resolution for port checks needs to follow ALL CNAME chains across ALL NSes to build the complete IP set. The spec does not clarify this.